<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<select>
    <script>
        let city=["北京市","天津市","上海市","重庆市","河北省","山西省",
            "辽宁省","吉林省","黑龙江省","江苏省","浙江省","安徽省","福建省",
            "江西省","山东省","河南省","湖北省","湖南省","广东省","海南省","四川省",
            "贵州省","云南省","陕西省","甘肃省","青海省","台湾省","内蒙古自治区","广西壮族自治区",
            "西藏自治区","宁夏回族自治区","新疆维吾尔自治区","香港特别行政区","澳门特别行政区"]
        for(let i=0;i<city.length;i++){
            document.write("<option>"+city[i]+"</option>")
        }
    </script>
</select>
</body>
</html>